NameNotFoundException when calling a EJB in Weblog

Question

I have a EJB defined as this:

package com.foo;
@Stateless (mappedName="HelloWorld")
public class HelloWorldBean implements HelloWorld, HelloWorldLocal
....

When it's deployed to Weblogic (WL), it gets the name myBean. I'm not sure if this is important.

I try to call the bean with this code:

Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
ic = new InitialContext(ht);
tp = (HelloWorld) ic.lookup("HelloWorld#com.foo.HelloWorldBean");

Anyone know why I get the following error?

javax.naming.NameNotFoundException: While trying to lookup 'HelloWorld#com.foo.HelloWorldBean' didn't find subcontext 'HelloWorld#com'.
 Resolved '' [Root exception is javax.naming.NameNotFoundException: While trying
 to lookup 'HelloWorld#com.foo.HelloWorldBean' didn't find
 subcontext 'HelloWorld#com'. Resolved '']; remaining name 'HelloWorld#com/foo/HelloWorldBean'

Answer 1

To lookup a Remote Interface of a Session Bean with multiple Remote Business interfaces (e.g.com.acme.FooBusiness1, com.acme.FooBusiness2), you need to lookup a name derived from the combination of the target ejb's global JNDI name (the mappedName() in @Stateless) and the specific Remote Business Interface, separated by a "#":

InitialContext ic = new InitialContext();
FooBusiness1 bean1 = (FooBusiness1) ic.lookup("FooEJB#com.acme.FooBusiness1");
FooBusiness2 bean2 = (FooBusiness2) ic.lookup("FooEJB#com.acme.FooBusiness2");

In the typical case of a bean only having one Remote Business Interface, this fully-qualified form is not needed. In that case, the bean's JNDI name can be used directly :

FooBusiness bean = (FooBusiness) ic.lookup("FooEJB");

---

That was the theoretical part. Now the practice. In your case, from what I can see, you are accessing the EJB from Weblogic so I'd rather use the no-arg InitialContext() constructor (and use a jndi.properties configuration file for other environments) but this is just a side note. Then, you should look up com.foo.HelloWorld, the Remote Interface, not com.foo.HelloWorldBean, the implementation:

InitialContext ic = new InitialContext();
(HelloWorld) ic.lookup("HelloWorld#com.foo.HelloWorld");

And if your bean has only one Remote Business Interface, this should work:

(HelloWorld) ic.lookup("HelloWorld");